Automobile-locking device.



, WSP

Patented Apr. 1917 STATES PATENT Louis o. iscHnaivmmiomv, oF'PATnsoN, NEW JERSEY.

AUTOMOBILE-LOCKING DEVICE.

Specification of Letters Patent.

Patented Apr. 24, 1am.

Application nledctober 31, 1916. 4Serial No. 128,669.

To. all whom z'tfmay concern:

Bc itknown that I, Louis G. SCHERMER- HORN, a citizen of the .United States, and a resident of Paterson, Passaic county, and

State of New Jersey, have invented certain new and useful Improvements 1n Automobile-Locking Devices, of which the following i is a specification, reference being had to the accompanying drawings, forming a part thereof;

My invention relates to lmeans 4for secur' ing motor driven apparatus against unauthorized starting and running, and has special reference to locks for automobiles and other devices having change gear transmission mechanism. A

One object of my invention is to provide a `simpleand durable lock which shall be -adapted not only to prevent the manipulation of the gear shifting lever, but also to lock the transmission gears and driving wheels.

In order that my inventionmay be thoroughly understood vI will now proceed to describeV the same in the following specilication, and then pointout the novelfeatures p thereof in appended claims.

Referring to the drawings:

Figure 1 is a diagrammaticplan view of the chassis of a motorvchicle which embodies my invention, the engine and front wheels being,r omitted andthe transmission casing being broken away and shown in section.

Fig. 2 is a detail view showing` the transmission locking segment in elevation.

U Fig. 31s a plan View on a larger scale, of

the .transmission control lever and its. slotted 21-'-22 between'the engine shaft 14 andthe coun'tershaft 20, and a plurality of change gears.

Secured to the'countersha'ft 20 is an 1nteri 'mediate speedgea-r 23 which isadapted to mesh .with al gear 24: which forms a 4part-of the clutch 419and is slidably mounted onthe sha-ft 18, aV low speed gear 25 which adapt-Q 24 together with the 22, 23 and 24 to the transmission shaft.

ed to mesh with the @gear 26 and a 'reverse l -fv gear 27 which is adapted-to Abe connected" through an auXilia1y` gear 28 to a gear 29.k The gears 26 and'29 constitutefoneunit and are slidably mounted onthe shaft 18`i-`1i al Well known manner.

Adjacent to the intermediate speed 4gettii 23 is a stationary gear .segment 30 which' is adapted to mesh with the gear 24 when the control lever occupies one position as hereinafter explained, and to lock Jthegea'r` gear 23 with whichtheA latter is also in mes The clutch member 19 is adapted to'fhe'vo closed when the lever 16 is thrown into one branch 31 of the slottedguide block and when the control lever is thrown in the opposite direction into the branch 35i-the clutch I 19 is released and the-.gear 24'meshes with the gear4 23. -Vlhenfthe` cl'utchisset "theLe'n# gine shaft is connected directly to-tlfle-trans mission shaft 1S which is coupled tothe dif' ferential mechanism by a shaft When the gear 24 meshes with'the gear 2'31fthe en-` 1 gine shaftis connected' through gears'21l1and' this means the transmission shaft the rear'axle are driven at intermediate speeld.

Iii-'the control lever is shifted tothefother" side of the H-shaped slot inthe bloeki., it may be thrown either into one branch in which the gears 25 and 2G arei-nmesh, or. into the opposite branch 37 in whichi the reversing gears 28 and 29 are i-n mesh.

The branch 33 of' the guide slot islornger"A than the others and has a latch 38ans clearly shown in Fig. 3. This latch isadaptedtohe cammed back by the action of' the lever-in i V oppositionV to springs 39 and permits the-*le- F ver to enter the bottom oi" the slot. It'fdoes' however, prevent the accidental movement of the lever tor the bottom oi: the siot-accentuatingl this position and requiringvaddi# ,tional force to overcome the springs 39L-andf set the lever.

4Onthis account there is no likelihood of the transmission control lever. beino' thrown to the bottom of the slot accidentally. The

lever 'is "manipulated in the usual way for105 controlling the vehicle' and when `the machine is broughtto rest and the engine stopped, the driving wheels as wellasthe transmission gearing may be positively locked against rotative movementby throwing the control lever v16 to the bottom of slot branch 33. The latch 38 springs out zoA behind it and positively holds'it in position. Furthermore, 1t cannot be released to govern the transmission? gears, un'til a key' such as the key 40 of Fig. 3, has been utilized for throwing back the latch.

When the lever is thrown to the bottom of the slot branch 33, the clutch member 19 is so adjusted that the vgear 24 moves partially out of mesh With the gear 23 and partially into mesh` with the stationary gear segment 30. In this position it is-obviously impossible to AturntheV transmission shaft 18-on which the,A gear 24 is splined, or the shaft 20 to which the gear 23 is secured. In other Words, itis impossible to either control the transmission or start the vehicle.

Attention is directed to thefact that the incorporation of my invention in a transmission mechanism of well known type, involves only comparatively slight changes to be made and it does nevertheless lock the control lever so that it cannot be shifted and the transmission gearing so that the rear axle or driving Wheels cannot be turned Without releasingr the lever. Consequently, the owner or driver of the vehicle may safely leave his car since no one can start or run it unless he is provided with a key for releasing the latch in the manner already explained.

In order to more securely lock both trans mission shafts I prefer that the gear 24 be Wide enough to completely overlap both the gear 23 and the stationary segment 30. A

It is evident that variations may be effected WithinA the spirit and scope of my invention, and I intend that only such limitations be imposed as are indicated in the appended claims.`

What I claim is:

1. Transmission gearing comprisingl an axially adjustable gear, a relatively fixed gear adapted to coperate therewith in one position, and a rigid segment adapted to engage the adjustable gear in a second position thereof to thereby locksaid gearing'v against 'rotation'.

2. Transmission gearing comprising' a direct transmission shaft, a countershaft, cooperating gears on the -respective shafts, comprising an axially adjustable gear, sta tionary means for engaging said adjustable 1,223,908 l p f gear, means for'l axially adjusting said adjustable gear to throw lit into and out of mesh with its doperating' gear, and into engagement' with said stationary means to lock the adjustable gear 'against rotation.

3. Transmission gearing comprising a direct transmission shaft, a countershaft, cooperating gearson the respective shafts, means for axially adjusting one of the ears to throw it into and out of mesh Wit its coperating gear, and means adjacent to the coperating fixed gear for? locking the adjustable gear against rotation.

4.. Transmission' gearing comprising a direct transmission shaft, acountershaft, co-

operating gears on the respective shafts,

means for axially adjusting one of the g'ars to throw it into and out of mesh with;4 its cooperating gear, and a stationary gear segment adjacent to the fixed ear and adapted to be engaged by the adjustable gear `for locking same.

5. Transmission gearing comprising'.I a direct transmission shaft, a' countershaft,`cooperating gears on the respective shafts, means for axially adjusting one lof the gears to throwit into andout of mesh'rwith its cooperating ear, and a stationary-segment adjacent to t ie gear, and means for moving the adjustable gear into mesh with the fixed gear andthe stationary segment to lock the sha s. y

rftA transmission' gearing comprising a relatively fixed gear, an adjust-able gear adapted to coperate therewith, and a stationary gear segment adapted to mesh with theadjustable gear in one position, a control lever for determining the position of the adjustable gear and a. latch for locking the control lever in the position corresponding to the locked position of the'adjustable ear. g 7. A transmission gearin comprising an adjustable gear, arelativeIy fixed gear, a stationar segment adjacent tor the fixed gear, an means for shifting the adjustable gear into mesh with either the ixed gear alone or both the fixed gear and ary segment.

10o the station- In Witness whereof, I have hereunto'set 

